If you got this question wrong, check out this article by Google on separate URLs for mobile vs. desktop for more information. (For more information about different types of mobile configurations, please see The Definitive Guide To Technical Mobile SEO.)
A. site design that adapts to the specific needs of the user.
If you got this question wrong, go to this article by Google on responsive design for more information.
A. site that adapts to the specific needs of the user.
If you got this question wrong, go to this article by Google on dynamic serving for more information. (For more information about different types of mobile configurations, please see The Definitive Guide To Technical Mobile SEO.)
Tests run by Moz show that simply having a keyword in a bigger font has the same impact. This makes far more sense. Page markup is relative. So the highest level heading tag is the one that matters most.
A. The relevance and breadth of the content on the page. (Your Answer)
You can also learn more about this by reviewing Chapter 2 of Search Engine Land's Guide To SEO, or by getting The Art of SEO and going to the section on content optimization on page 317.
You can learn more about keyword cannibalization, including how to go about fixing it here.
A. When one page has the exact same content as another.
You can learn more about how Google sees duplicate content here, or read more about duplicate content on Search Engine Land.
Google explains hreflang tags in detail here. I also shot a video to explain how to use hreflang tags here.
A. It tells web servers that users more about what a user needs.
Patrick Sexton does a great job explaining the Vary: User-Agent HTTP here. You can also see a video with my explanation here.
A. Fix thin and poor-quality content on the pages of your site, and wait. (Your Answer)
You can read more about the Google Panda algorithm update here on Search Engine Land. If you have The Art of SEO, Chapter 9 discusses Panda in detail.
A. Remove all links to your site with a Domain Authority of 50 or less, and wait.
A. To implement 301 redirects.